Trusted Group Construction Mechanism Based on Trusted Management

The Internet of things connects a large number of device nodes through the Internet, realizing the interconnection of all things at any time and anywhere. However, the multi-source heterogeneous, free and open characteristics of the Internet of things lead to the lack of dynamic adaptability of the current network connection model and can not deal with a variety of security threats. Therefore, how to build a safe and reliable trusted group is a key problem to be solved in the Internet of things environment. Trusted measurement technology can comprehensively measure the large-scale terminal nodes of the Internet of things, ensure the credibility of the perceived nodes, and lay the foundation for the overall security of the Internet of things. In the Internet of things environment, the main research content of this paper is how to use the trusted measurement technology to build a safe and reliable trusted group, and solve the security threat faced by the trusted group in the dynamic operation process. Firstly, this paper analyzes the centralized and distributed network structure in the Internet of things perception network, and then designs the corresponding perception node Trusted measurement scheme and trusted group construction mechanism. In this paper, for the centralized networking, the sensing node has the three-tier structure characteristics of “base station, domain management node and ordinary sensing node”. In the Trusted measurement stage, hierarchical measurement is used to measure the static environment, dynamic behavior and energy of the sensing node respectively. In the construction of trusted groups, hierarchical management is used to decide whether individuals join trusted groups; Reduce the possibility of malicious nodes as management nodes by adding monitoring nodes; Regularly evaluate the security status of nodes and eliminate malicious nodes in time.